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Dense vegetation is placed independently in each cell, without spatial structure.

Usage

pattern_dense(veg_prob = 0.9)

Arguments

veg_prob

Numeric. Probability that each cell is vegetated (0-1, default: 0.9). Higher values give a denser vegetation cover.

Value

A named "landscape_params" list containing the supplied parameters.

Valid values and batch sampling

A single value fixes a parameter. A length-2 vector is a range, sampled once per landscape by create_landscapes and rejected by create_landscape. The table below shows for each parameter:

valid values that create_landscape accepts, and sampled ranges that create_landscapes draws from once per landscape for any parameter left unset. The defaults shown in Usage therefore apply to create_landscape only. Ranges that scale with landscape size are shown for the default 100 by 100.

ParameterValidSampled
veg_prob0 to 10.8 to 1

Examples

# A single landscape, with a fixed value
create_landscape("dense", params = pattern_dense(veg_prob = 0.95))
#> Landscape: <unnamed> [pattern: dense]
#> -----------------------------------------
#> Dimensions: 100x100 (10000 cells)
#> Resolution: 1.0x1.0
#> Extent    : xmin=0.0, xmax=100.0, ymin=0.0, ymax=100.0
#> Values    : min=0.0, max=1.0
#> Parameters: width = 100, height = 100, veg_prob = 0.95 

# A batch, with veg_prob drawn from a range once per landscape
create_landscapes(
  n = 4,
  patterns = "dense",
  params_list = list(dense = pattern_dense(veg_prob = c(0.85, 1)))
)
#>  Successfully generated all 4 training landscapes
#> $dense_1
#> Landscape: "dense_1" [pattern: dense]
#> -----------------------------------------
#> Dimensions: 100x100 (10000 cells)
#> Resolution: 1.0x1.0
#> Extent    : xmin=0.0, xmax=100.0, ymin=0.0, ymax=100.0
#> Values    : min=0.0, max=1.0
#> Parameters: width = 100, height = 100, veg_prob = 0.927899734594394 
#> 
#> $dense_2
#> Landscape: "dense_2" [pattern: dense]
#> -----------------------------------------
#> Dimensions: 100x100 (10000 cells)
#> Resolution: 1.0x1.0
#> Extent    : xmin=0.0, xmax=100.0, ymin=0.0, ymax=100.0
#> Values    : min=0.0, max=1.0
#> Parameters: width = 100, height = 100, veg_prob = 0.895664216484874 
#> 
#> $dense_3
#> Landscape: "dense_3" [pattern: dense]
#> -----------------------------------------
#> Dimensions: 100x100 (10000 cells)
#> Resolution: 1.0x1.0
#> Extent    : xmin=0.0, xmax=100.0, ymin=0.0, ymax=100.0
#> Values    : min=0.0, max=1.0
#> Parameters: width = 100, height = 100, veg_prob = 0.988302973238751 
#> 
#> $dense_4
#> Landscape: "dense_4" [pattern: dense]
#> -----------------------------------------
#> Dimensions: 100x100 (10000 cells)
#> Resolution: 1.0x1.0
#> Extent    : xmin=0.0, xmax=100.0, ymin=0.0, ymax=100.0
#> Values    : min=0.0, max=1.0
#> Parameters: width = 100, height = 100, veg_prob = 0.956263233337086 
#>